I have the M&A 1944 Eroica. This was actually my first introduction to B3, albeit on a budget lp that my older sister bought in 1972. That recording imprinted me; every other recording of the piece has never seemed as Life and Death as this one.
I did play a bit of the M&A after the last time that I listened to Pristine, and the differences weren't as significant as I thought they would be. The Pristine is preferable but I think the Fanfare reviews the Pristine regularly uses on their website doth protest a bit to much.
I actually bought the Pristine Digital Collection, and subscribe to the streaming service. If you do the latter then you get free downloads. The only problem with the streaming service is it doesn't work with most of the players that play Qobuz,Tidal, etc. You either need a computer or listen from a mobile device on the Pristine site. I use Chromecast from my phone to my Cambridge Audio streamer.
At any rate if you do the streaming service and download from their site once a month you basically have it for free, and there are enough recordings on the PA site to make it worthwhile, imo.
Speaking of Pristine Audio and wartime recordings from the Third Reich, I listened to the Walter Gieseking Beethoven Emperor recording from 1944 that was made in stereo. I had heard it previously when it was released, and aural memory is unreliable but the Pristine recording sounds amazing. btw there is a brief audible burst of antiaircraft fire